Heaterfan Posted November 24, 2009 Share Posted November 24, 2009 Hello. I'm brand new to the forum, as I have just begun working on an early Yamaha twin that I acquired in 2004. I'm hoping someone will be kind enough to help me identify the model, because I can't find much info about it. The title says it is a 1966, but doesn't provide the displacement. The headlight nacelle says YHA-1. If needed I can provide pics or the serial number. It has all the original paint (red and cream color), and is a streetbike with low exhaust pipes and fenders. If anyone can give me a clue it would sure make it alot easier to order parts. Thanks. Link to comment Share on other sites More sharing options...
Moderator Airhead Posted November 24, 2009 Moderator Share Posted November 24, 2009 Welcome...Yes a pic and serial number would help ...Paul Link to comment Share on other sites More sharing options...
blackhat250 Posted November 24, 2009 Share Posted November 24, 2009 an early Yamaha twin The headlight nacelle says YHA-1. If needed I can provide pics or the serial number. It has all the original paint (red and cream color), and is a streetbike with low exhaust pipes and fenders. Welcome heatRfan Is it a two-stroke ?? lookn up some in mags now ?? YDS 5 YDS 3 here Link to comment Share on other sites More sharing options...
Heaterfan Posted November 25, 2009 Author Share Posted November 25, 2009 Welcome heatRfan Is it a two-stroke ?? lookn up some in mags now ?? YDS 5 YDS 3 here Yes, it's a two cycle twin. Did Yamaha even make 4 cycle bikes in 1966? Anyway, I think YHA-1 is actually the model number from what I can gather. I'll provide the serial number later today. I have seen some pics of the "big Bear" (not the quad or the early scrambler) and I think that is what it is. Now I just need to find some of the rubber intake hoses and I think it will be complete (I hope). Any good sources for these old parts or repro. parts? Thanks for the interest and I'll keep you posted on my progress, with pics. Link to comment Share on other sites More sharing options...
Heaterfan Posted November 25, 2009 Author Share Posted November 25, 2009 Welcome...Yes a pic and serial number would help ...Paul OK, I can provide the number later today. I partially disassembled it today to free up the carb slides, so I'll wait to post the pics untill it's reassembled. Thanks. Mike. Serial number is Y23235** Link to comment Share on other sites More sharing options...
turrican64 Posted November 25, 2009 Share Posted November 25, 2009 OK, I can provide the number later today. I partially disassembled it today to free up the carb slides, so I'll wait to post the pics untill it's reassembled. Thanks. Mike. Serial number is Y23235** From that serial, it looks like you have a YDS3 as previously mentioned. It was also called a Catalina in some areas. http://cyclerestorer.com/pages/show_man_serial_num.php?sort_field=4&manufacturer=Yamaha Link to comment Share on other sites More sharing options...
Heaterfan Posted November 27, 2009 Author Share Posted November 27, 2009 From that serial, it looks like you have a YDS3 as previously mentioned. It was also called a Catalina in some areas. http://cyclerestorer.com/pages/show_man_serial_num.php?sort_field=4&manufacturer=Yamaha Link to comment Share on other sites More sharing options...
Heaterfan Posted November 27, 2009 Author Share Posted November 27, 2009 Great! Thanks for the responses and help. Mike. Link to comment Share on other sites More sharing options...
CARLO DELIBERTO Posted November 14, 2017 Share Posted November 14, 2017 FRAME# Y33-38508 MOTOR# L1-38508 YAMAHA TWIN JET 100 1 Link to comment Share on other sites More sharing options...
Moderator Cynic Posted November 18, 2017 Moderator Share Posted November 18, 2017 Nice, but after 8 years I think the op may have it figured out. 1 Link to comment Share on other sites More sharing options...
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